Steam radiator



(No Model.)

R. G. PAUL.

STEAM RADIATOR.-

No. 244,762. vPatmfned July 26,1881.

il Y Y vUNITED STM-Esv PATENT OFFICE.

-ROBERT C. PAUL, OF FROSTBURG, MARYLAND.

STEAM-RADIATO R.

SPECIFICATION forming part of Letters Iatent No. 244,762, dated July 26, 1881,

Application filed March 21, 1881. (No model.)

.To all whom it may concern:

Be it known that I, ROBERT G. PAUL, a citizen of the United States, residing at Frostburg, in the county of Alleghany and State of Maryland, have invented a new and useful Improvement in Steam-Radiators, of which the following is a specification.

Heretofore vertical tube radiators have been constructed, generally, without a top chamber to contain steam like the bottom chamber or base. diiculty encountered in connecting a top and bottom chamber with tubes having upon one end a right and upon the other a left hand screw-thread. The top andL bottom being unyielding, and not allowing the necessary play the tubes must have when both ends are being screwed in at the same time, prevents the possibility of radiators being constructed in this manner. to screw the lower ends of the tubes into a chamber or base, and connect them in pairs at the top by screwing them into return bends, which permit of their being put together with the right and left hand threads. This old method is objectionable, because a top chamber cannot be used, and in a radiator of 'this kind, although occupying as much space as one with a top chamber, the radiationis much less. Besides, each pair of tubes at their upper ends form a reservoir for the collection of air, which cannot be conveniently drawn oil',

and which prevents the circulation ofthe steam in those parts, Vand necessarily prevents instantaneous and perfect heating.

I overcome the objectionable features of the old style of construction by animproved means of connecting the top and base chambers.

The mode of construction is as follows: A`

top and base chamber, A B, of any required dimensions, and similar in shape and size, are made with holes in the bottom of chamber A for receiving the upper end of the tubes, and with holes in the top of chamber B for receiving the lower ends of the tubes. All of the holes `depth of two-thirds of the hole', an

This has been in consequence of the Hence the old method has been' in chamber A are straight and. threaded, for receiving the threaded upper ends ofthe tubes, while 'those vin chamberB are without threads, except one upon each end, which is straight andl threaded like those in the top chamber. These holes, excepting C and D, are made oneeighth of an inch larger than the ubes to a about as large as the tubes the remaining depth, for the purpose of forming a space around the tubes for the reception of metal rings, by means of which the tubes are calked steam-tight to the chambers.

In putting the radiator together a tube with a right-hand thread upon one end and a lefthand thread upon the other is screwed to the hole Gin the lower chamber and to the hole opposite in` theupper chamber, and another tube is similarly fitted to the hole D, and the opposite one above those being the only ones which can be conveniently fitted in this manner. The upper ends of the remaining tubes are then threaded and screwed into the threaded holes in the upper chamber, while their lower ends are made fast with wrought-iron rings about one-sixteenth ofan inch thick,which surround `the lower ends of the tubes, and are calked tightly between the large part of the holes and the tubes.\

In a radiator ot' this kind the steam, entering through the supply-pipe at E, instantly circulates through all parts of the radiator forcing the a-ir to chamber A, where it is drawn ott' by means ofthe air-valve F.

What I claim as my invention, and desire to secure by Letters Patent, is-

In combination with the holeG, having the shoulder H, the ring I, theA upper and lower steam-chambers, and the threaded holes C and D, as described.

ROBERT C. PAUL.

Witnesses;

. WM. ARMSTRONG,

G. A. WINGERT. 

